Enabling CORS on the server and client side fixes the issue in Chromium, Chrome and Firefox as of October 2014. It reports the first error encountered, the supposed line number, and the time. Were students "forced to recite 'Allah is the only God'" in Tennessee public schools? Then open the html page on the same browser.

This was fixed in bug 737087, now scriptElement.onerror is invoked instead in such cases. is undefined" or something similar. For example: Error: ‘a’ is undefined Script: build.js Line: 3 Variable ‘a' is very hard to find when line 3 has 30000 characters of minified JavaScript. I remember having trouble with that at one point.

Here’s an example of the Error object’s stack property in Chrome 46: "Error: foobar\n at new bar (:241:11)\n at foo (:245:5)\n at :250:5\n at :251:3\n at :267:4\n at callFunction (:229:33)\n at Search Resources Case Studies Podcasts Trends Videos Whitepapers Blog What is Raygun? But it is not the same as a normal try..catch, so producing a stacktrace with a library like stacktrace.js will probably not work too well. See Webkit source that checks for origin (Chrome/Safari) and Firefox source that handle this error.

Roll on 2015 and better JavaScript error handling! Different browser behaviours regarding script errors Depending on what browser your users are running, the above properties may or may not have an effect. In particular, JavaScript's AJAX calls can use the XMLHttpRequest mechanism. Because of how incorrectly content creators use XHTML, browsers decided to only use XML parser on application/xhtml+xml (it's really strict parser).

The hixie.ch/advocacy/xhtml and webdevout.net/articles/beware-of-xhtml says why not use HTML parser with XHTML. –xfix May 6 '11 at 16:23 7 Sigh... Now that it's clear why this error occurs, it's also clear that there's a class of errors that Errorception cannot catch (hat-tip: @vitaly_babiy), and that it's necessary to come up with The auto translate feature of Google Chrome. The Problem Script error. "Script error" is what browsers send to the onerror callback when an error originates from a JavaScript file served from a different origin (different domain, port, or

line 0 errors for some time being reported back to our server when the error occurred in customer browsers. It is important to note that this attribute has no effect on browsers that don't support CORS, see CanIUseCors to check which browsers support it. I don't think setting default values in you onerror is a good idea and the 0 probably comes from parseInt(ln || 0) when the error isn't really on the page (see In browsers that have not implemented this requirement, they can still be obtained via arguments[0] through arguments[2].

Follow @ravikiranj Tweet Previous post Next post Comments Please enable JavaScript to view the comments powered by Disqus. share|improve this answer edited May 11 '11 at 7:19 answered May 10 '11 at 22:33 xavierm02 3,79411021 The URL is evenly distribute amongst the pages of my site. Got questions about this post? Imagine that if you're logged in, the error spitted out might be something like "Welcome Ravi..

I already have a couple of ideas to improve error information, and will be testing them out soon. This doesn't happen in Firefox. Share this on Twitter Facebook Hacker News The web's check engine light. when the error occurs in a script that's hosted on a domain other than the domain of the current page.

It’s also one of the major mechanisms by which Sentry’s client JavaScript integration (raven-js) works. It contains 3 standardized properties: message, fileName, and lineNumber. And that’s the whole purpose of window.onerror – getting insight into uncaught errors in your application. TRY RAYGUN FREE {errorception} blog Sunday, 15 April 2012 "Script Error" on line 0 Update: Cross-domain error reporting is improving.

The browser is trying to hide the original error source and everything related to it. CORS support and third-party errors are just one of these, but hopefully with the above guide you should be able to ensure you are receiving the error data you need to It declares a single function, foo , whose invocation will always throw a ReferenceError. // another-domain.com/app.jsfunctionfoo(){bar();// ReferenceError: bar share|improve this answer answered Oct 25 '11 at 21:36 kbern 91 Did this work for chrome? –UpTheCreek Jul 31 '13 at 15:12 add a comment| up vote 0 down

Possibly a result of a recent IE security patch as this behavior previously did not exist. How to catch JavaScript Errors with window.onerror (even on Chrome andFirefox) I’m working on a new (mostly greenfield) responsive website for eBay Sweden that has a fair amount of JavaScript and In particular the Browser Compatibility matrix is a valuable read; you'll notice proper implementations are only available in recent versions of the evergreen browsers, come with caveats in the bug tickets, Polyfilling window.onerror with try/catch But there is a workaround – you can wrap code in your application inside a try/catch and catch the error yourself.

Once both of these steps have been made, any errors triggered by this script will report to window.onerror just like any regular same-domain script. This will result in a script error, but the error is interesting because it can tell us if you're logged in or not. crossorigin=”anonymous” This tells the browser that the target file should be fetched “anonymously”. This is how you use it :